What was found in Mundelein's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 1082.1 µg/L 27% of the EPA limit 4000 µg/L Highest in the city: WEST SHORE PARK SUBDIVISION · 590 people · 2018 | 7/8 | SYR4 |
| Nitrate | 896 µg/L 9% of the EPA limit 10000 µg/L Highest in the city: DAYSPRING BIBLE COLLEGE · 30 people · 2019 | 3/8 | SYR4 |
| Nitrate-Nitrite | 654.25 µg/L 6.5% of the EPA limit 10000 µg/L Highest in the city: SCHWERMANNS 2ND AND 3RD WTR BRD · 285 people · 2019 | 3/8 | SYR4 |
| Barium | 278.48 µg/L 14% of the EPA limit 2000 µg/L Highest in the city: DAYSPRING BIBLE COLLEGE · 30 people · 2018 | 7/8 | SYR4 |
| Copper | 248.9 µg/L 19% of the EPA limit 1300 µg/L Main supplier: MUNDELEIN · 31,500 people · 2017
Highest in the city: 267.95 µg/L — TOWNERS SUBDIVISION · 206 people · 2018 | 6/8 | SYR4 |
| Total Haloacetic Acids (HAA5) | 8.08 µg/L 13% of the EPA limit 60 µg/L Main supplier: MUNDELEIN · 31,500 people · 2019
Highest in the city: 44.7245 µg/L — DAYSPRING BIBLE COLLEGE · 30 people · 2017 | 6/8 | SYR4 |
| Trichloroacetic Acid | 3.476 µg/L No EPA limit set Main supplier: MUNDELEIN · 31,500 people · 2019
Highest in the city: 27.792 µg/L — DAYSPRING BIBLE COLLEGE · 30 people · 2017 | 4/8 | SYR4 |
| TTHM | 27.48 µg/L 34% of the EPA limit 80 µg/L Main supplier: MUNDELEIN · 31,500 people · 2019 | 6/8 | SYR4 |
| Dichloroacetic Acid | 5.7445 µg/L No EPA limit set Main supplier: MUNDELEIN · 31,500 people · 2019
Highest in the city: 20.201 µg/L — DAYSPRING BIBLE COLLEGE · 30 people · 2017 | 6/8 | SYR4 |
| Chloroform | 14.02 µg/L No EPA limit set Main supplier: MUNDELEIN · 31,500 people · 2019 | 6/8 | SYR4 |
| Chromium | 11 µg/L 11% of the EPA limit 100 µg/L Highest in the city: DAYSPRING BIBLE COLLEGE · 30 people · 2018 | 2/8 | SYR4 |
| Xylenes, Total | 9.468 µg/L 0.1% of the EPA limit 10000 µg/L Highest in the city: SCHWERMANNS 2ND AND 3RD WTR BRD · 285 people · 2019 | 2/8 | SYR4 |
| Lead | 7.035 µg/L 47% of the EPA limit 15 µg/L Main supplier: MUNDELEIN · 31,500 people · 2017
Highest in the city: 9.24 µg/L — WEST SHORE PARK SUBDIVISION · 590 people · 2018 | 4/8 | SYR4 |
| Bromodichloromethane | 7.831 µg/L No EPA limit set Main supplier: MUNDELEIN · 31,500 people · 2019
Highest in the city: 8.75 µg/L — WEST SHORE PARK SUBDIVISION · 590 people · 2019 | 4/8 | SYR4 |
| Dibromochloromethane | 5.4703 µg/L No EPA limit set Main supplier: MUNDELEIN · 31,500 people · 2019
Highest in the city: 6.57 µg/L — WEST SHORE PARK SUBDIVISION · 590 people · 2019 | 3/8 | SYR4 |
| Monobromoacetic Acid | 3.302 µg/L No EPA limit set Main supplier: MUNDELEIN · 31,500 people · 2019
Highest in the city: 4.97 µg/L — DAYSPRING BIBLE COLLEGE · 30 people · 2017 | 2/8 | SYR4 |
| Combined Radium (-226 And -228) | 4.146 pCi/L 83% of the EPA limit 5 pCi/L Highest in the city: WEST SHORE PARK SUBDIVISION · 590 people · 2018 | 7/8 | SYR4 |
| Dibromoacetic Acid | 2.3 µg/L No EPA limit set Main supplier: MUNDELEIN · 31,500 people · 2019 | 3/8 | SYR4 |
| Bromoform | 1.295 µg/L No EPA limit set Main supplier: MUNDELEIN · 31,500 people · 2019
Highest in the city: 2.24 µg/L — DAYSPRING BIBLE COLLEGE · 30 people · 2017 | 3/8 | SYR4 |
| Ethylbenzene | 0.8918 µg/L 0.1% of the EPA limit 700 µg/L Highest in the city: SCHWERMANNS 2ND AND 3RD WTR BRD · 285 people · 2019 | 1/8 | SYR4 |
| Lead | 0.0074 mg/L 49% of the EPA limit 0.0150 mg/L Main supplier: MUNDELEIN · 31,500 people · 2025
Highest in the city: 0.0121 mg/L — TOWNERS SUBDIVISION · 206 people · 2024 | 8/8 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Mundelein
| Supplier | Population served |
|---|---|
| MUNDELEIN | 31,500 |
| WEST SHORE PARK SUBDIVISION | 590 |
| SCHWERMANNS 2ND AND 3RD WTR BRD | 285 |
| SYLVAN LAKE 1ST SUBDIVISION | 210 |
| TOWNERS SUBDIVISION | 206 |
| DIAMOND LAKE MHP | 198 |
| WEST SHORELAND SUBDIVISION | 189 |
| DAYSPRING BIBLE COLLEGE | 30 |
Frequently asked questions about Mundelein tap water
Is Mundelein tap water safe to drink?
EPA testing detected 21 contaminants in the water serving Mundelein. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Mundelein?
8 public water suppliers report drinking-water monitoring for Mundelein, Illinois to the EPA. Each is listed above with its population served.
What contaminants are in Mundelein's water?
The contaminants EPA monitoring detected in Mundelein include Fluoride, Nitrate, Nitrate-Nitrite, Barium, Copper. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.